Volume 40, Number 2, April 2022
|Page(s)||407 - 413|
|Published online||03 June 2022|
Electromechanical coupling modeling and analysis of piezoelectric damping laminated structures based on zig-zag hypothesis
School of Energy Engineering, Yulin University, Yulin 719000, China
2 School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200072, China
3 School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China
Based on the zig-zag theory and Hamiltonian principle, the electromechanical coupling dynamic finite element(FE) model of piezoelectric damping laminated structure is established, the natural frequency and loss factor of the structure is accurately calculated. The eight nodes quadratic element is adopt for FE modeling, each node with seven DOFs, which considers the complex elastic modulus of damping layer. The correctness of model is verified by the calculation and simulation of an example in the literature. The effects of reinforcement orientation angle, thickness of damping layer and structure curvature on the frequency and loss factor of piezoelectric damping laminated structure are investigated. This study can provide references for vibration control and optimization design of piezoelectric damping laminated structures.
基于zig-zag板壳假设和哈密顿原理建立了压电阻尼层合结构的机电耦合动力学有限元模型，实现了结构自然频率和损耗系数的准确计算。有限元模型采用八节点的七自由度(degrees of freedom，DOFs)四边形单元，且考虑阻尼层的复弹性模量。通过对文献算例的计算与仿真，验证建立的有限元模型的正确性。研究了材料增强角度、阻尼层厚度和结构曲率对压电阻尼层合结构频率和损耗系数的影响，为压电阻尼层合结构的减振及结构优化提供参考。
Key words: piezoelectric damping laminated structure / zig-zag hypothesis / damping analysis / dynamic modeling
关键字 : 压电阻尼层合结构 / zig-zag假设 / 阻尼分析 / 动力学建模
© 2022 Journal of Northwestern Polytechnical University. All rights reserved.
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